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박영선(Park Y.S),이주영(Lee J.Y),박경진(Park G.J) 한국자동차공학회 1994 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
As the occupant safety receives more attention from automobile industries. protection systems have been developed quite well. Developed protection systems must be evaluated through real tests in crash environment Since the real tests are extremely expensive, computer simulations are replaced for some prediction of the real test The energy absorbing(EA) steering system has a very important role in vehicle crashes because the occupant can hit the system directly. The EA steering system is disassembled by parts and modeled by segments and joints. The body block test is carried out to validate the modeling. The established model is applied to a crash simulation of a full-car model and tuned again. After the modeling is. finished, components of the steering system are designed to minimize the injury of a passenger by an optimization algorithm.<br/>
박영선(Y. S. Park),이주영(J. Y. Lee),박경진(K. J. Park) 한국자동차공학회 1995 한국 자동차공학회논문집 Vol.3 No.2
The safety analysis becomes very essential in the crash environment with the growth of automobile industry. Recently, an airbag system is required to protect the occupant The effects of an airbag can be evaluated exactly from the barrier or sled test which is quite expensive. The airbag system in a passenger car is analyzed with the occupant analysis program, The modeling of the passenger Car including an airbag is established and the results are verified by comparisons with real crash tests. However, the solution of an airbag design can not be obtained easily with the conventional method such as an optimization due to the nonlinearity and complexity of the problem. An iterative design algorithm using the orthogonal array is proposed to overcome the difficulties. The design trend of an airbag is recommended to minimize the injury of an occupant with the proposed design algorithm and the results are discussed.
박영선(Y.S.Park),양우호(W.H.Yang),임재문(J.M.Lim),박경진(G.J.Park),박상희(S.H.Park),이형주(H.J.Lee) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.11_2
A simulation model of a belt integrated seat(BIS) is established using a computer simulation program ATB (Articulated Total Body). The model is validated by the well consistent with the dynamic load test with a conventional belt integrated seat. Hyper-ellipsoid elements are used to improve the accuracy of a simulation model and numerical results show the better performance of a BIS than a conventional seat for the view point of a occupant safety. A parameter study of seat belt is performed to choose 'the proper belt for a BIS.
박영선(Y.S.Park),박경진(G.J.Park),박상희(S.H.Park),이형주(H.J.Lee) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.11_2
A simulation model of a belt integrated seat(BIS) is established using a structural analysis and design program GENESIS. The model is validated by the well consistent with the static load test and a reference with a conventional seat. The Loading conditions are defined by the belt forces form the dynamic load test of a conventional belt integrated seat The seat components are reinforced to carry the crash force and a trend of the design of belt integrated seat is proposed through the process of structural optimization.
박영선(Y. S. Park),이주영(J. Y. Lee),박경진(K. J. Park) 한국자동차공학회 1995 한국 자동차공학회논문집 Vol.3 No.1
As the occupant safety receives more attention from automobile industries, protection systems have been developed quite well. Developed protection systems must be evaluated through real tests in crash environment Since the real tests are extremely expensive, computer simulations are replaced for some prediction of the real test In the computer simulation. it is very crucial to express the real environment precisely in the modeling precess. The energy absorbing(EA) steering system has a very important role in vehicle crashes because the occupant can hit the system directly. In this study, the EA steering system is modeled precisely, analyzed for the safely and designed by an optimization technology. First. the EA steering system is disassembled by parts and modeled by segments and joints. The segments are modeled by rigid bodies in motion and they have resistances in contact. Spring-clamper elements and force-deflection curves are utilized to represent the joints. The body block test is carried out to validate the modeling. When the test results are not enough for the detailed modeling, the differences between tests and simulations are minimized to calculate unknown parameters using optimization. The established model is applied to a crash simulation of a full-car model and tuned again. After the modeling is finished. components of the steering system are designed by an optimization algorithm. In the optimization process, the compound injury of a driver is defined and minimized to determine the chracteristics of the components. The second-order approximation algorithm has been adopted for the optimization.
박영선(Y. S. Park),이주영(J. Y. Lee),박경진(G. J. Park),위인혁(I.H.Wi),유재석(J.S.Ryou) 한국자동차공학회 1993 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In the crash environment, the safety analysis becomes very essential wi th the growth of automobile industry. Therefore. an airbag system is required to protect the occupant. The exact effects of an airbag can be evaluated from the barrier or sled test which is<br/> quite expensive. In this study. the airbag system in a domestic passenger car is analyzed with the computer simulation program CAL3D. The modeling of a passenger car including an airbag is established and the results are verified by comparisons with real crash 'tests. A graphic post-processor is developed for the dynamic behavior of an<br/> occupant. Some sensitive design parameters of an airbag are determined and design trends are recomended to minimize HIC(Head Injury Cri terion) wi th the orthogonal array of statistical methods.<br/>